Why was smallpox so deadly to american indians?

According to stephen hawking in the "origin of the universe" lecture, "why are we here" and "where did we come from" are questions that

Must read story will give if ! in “perseverance,” which theme is reflected in the lines, “life’s field will yield as we make it / a harvest of thorns or of flowers”? a: life is a field in which flowers and thorns will grow. b: accept what you are given, because you cannot change it. c: your life is the result of the work you put into it. d: working together people achieve their goals in life.

Ihave only a christmas cards left to write. a. few b. fewer c. less d. little